Frozen Stored Teeth: Autogenous Dentin as an Alternative Augmentation Material in Dentistry

Abstract

Tooth Shell Technique (TST) with the use of autologous dentin has proven to be a suitable method of grafting in the context of lateral ridge augmentation. This present feasibility study aimed to retrospectively evaluate the preservation by lyophilization of processed dentin. Thus, the frozen stored processed dentin matrix (FST: 19 patients with 26 implants) was re-examined with that of processed teeth used immediately after extraction (IUT: 23 patients with 32 implants). Parameters of biological complications, horizontal hard tissue loss, osseointegration, and buccal lamella integrity were used for evaluation. For complications, the observation period was 5 months. Only one graft was lost (IUT group). In the area of minor complications, without the loss of an implant or augmentation, there were two cases of wound dehiscence and one case with inflammation and suppuration (IUT: n = 3, FST: n = 0). Osseointegration and integrity of the buccal lamella were present in all implants without exception. Statistically, there was no difference between the groups studied for the mean resorption of the crestal width and the buccal lamella. Results of this study show that prepared autologous dentin preserved with a conventional freezer had no disadvantage compared to immediately use autologous dentin in terms of complications and graft resorption in the context of TST.

Primary and Post-Osseointegration Stability of Short (Ultra-Short) Implants on Edentulous Atrophied Distal Segments of the Mandible - An Indicator of Immediate or Delayed Load

“…Most modern scientists study the results of bone tissue augmentation [1] using various methods of controlling its regeneration [7,11], which in the early stages do not ensure the stability of implants but only partially compensate for the lost bone tissue volume according to clinical needs and reconstructive prognoses. After all, the bone graft goes through four stages of bone remodeling in its immediate completeness, namely: activation (3 days), resorption (30 days), formation (100 days), and mineralization (190 days), under conditions of stability and its protection and adequate blood supply [13].…”